Akamaru is injured by a rival shinobi from another nation. The shinobi used a battle skill that spreads bacteria throughout the opponent's body, infecting the vicitim's mental faculties. This causes Akamaru to go into uncontrollable rampage!
I swore to protect him,
no matter what!
!أقسمت بحمايته مهما كلّف الأمر
Ich habe geschworen, dass ich
ihn immer beschützen werde.
Prometí que te protegería.
Prometí que te protegería.
Avevo promesso 
di proteggerti a ogni costo...
Eu jurei protegê-lo, não importa como!